OK, we'll see what Stills gets offered after this season. If NFL evaluators agree with you guys, he'll surely make more than Allen, right?
You're making arguments up. Where did I say let Stills walk? Stills absolutely has not out performed Allen in their first two years. Allen was getting snaps on a good D and making a difference. Stills was barely in the rotation and considered a legit bubble candidate as recently as last year.
The Cardinals spent HUGE resources at DT both last year and this year. Do you honestly think that happens if they think Stills will be an above average DT?
It's wild that people here want to compare Stills to one of the best DT's in the NFL. Even if you're only focused on their early years, Allen was still the better player. You'll learn that as well when you see what Stills gets offered relative to Allen.